Observation opening for doors



Feb. 12, I

H. SAWYER OBSERVATION \OPENIN'G For: nooks Filed 1925 Patented Feb. 12, 1929.

UNITED rares NT Price.

HO'U'G-HTON SA'WYEB, F PIEDMOH '1, CALIEFORNIA.

OBSERVATION OPENING FOR DOORS.

Application filed October 7, 1825. Serial No. 60 933.

This invention relates to observation fit.

tings which may be applied to doors and the lilge to permit observation ofthe surround- [invention to generally improve devices of the character referred to by providing a simple and inexpensive observation fitting which may be easily and quickly applied H to a door or the like and by the use of wvhich a person interiorly ofthe door may obtain an extended view of the surroundings eXteriorly of the'doonwithout being observed. i y w In carrying out. the invention into practice I: provide a fitting. composedoftelescoping parts which. maybe inserted and clamped in an opening in a door or the like.

An opening is formed through the fitting which converges from the exterior side of the door to the interior sidethereof. This opening pernnts a maximum range of ob servation .of the surroundings exteriorly of the door to be obtained without disclosing the observer.

One form which the invention may as sume is exemplified in the following description and illustrated by way of example in the accompanying drawings, in which:

Fig. 1 is a central horizontal section through an observation fitting embodying the preferred form of my invention.

Fig. 2 is an elevation of the exterior end of the device.

Fig. 3 is an elevation of the interior end' outer section 14 and an inner section 15- which are formed with telescoping sleeves 16 adapted to threadedly connect at their contiguous ends. The sections are formed with circumscribing flanges 17 at their outer ends which abut against opposite surfaces of the door when the sleeves 16 are threadedly connected to clamp the sections of the fitting into position within the opening 11.

The outer section 14- of the fitting is formed with an inwardly pr01ecting frustoconical portion 18 which extends within and through the sleeves 16 to a point contiguous to anopening 19 formed inthe face plate 20 of. the inner section 15 of the fitting. It is seen that the frusto-conical portion of the 'outer fitting providesan outwardly divergcntopening througl'i the fitting so as to give an extended range of vision in all directions with avery small opening for the eye. Therefore a person located interiorly of the door may fully observe thesurroundings immediately exterior-1y of the door without being observed. p

In order to close the opening 20 when desired, a shutter 21 is pivoted to theoinner section l5and is provided with a knob 22 by which it may be swung aboutits pivot point to coveror uncover the opening.

In practice, the parts are constructed substantially as shown and described. A circular opening is then bored through the door or wall in the desired location and the sleeves of the two section-Is of the fitting are inserted in opposite ends thereof. The contiguous ends ofthe sleeves are then threadedly connected. andfthe sections are drawn together until their circumscribing flanges tightly abut against the surfaces of the door.

It is seen that by this construction, the fitting may be applied to doors of diflerent thicknesses without altering the construction I of the fitting. The threaded portions of the sleeves 16 permit them to telescope until the circumscribing flanges 17 thereof tightly abut against opposite surfaces of the door.

in the present instance I have struck lug 23 out from the face plate 20 of the inner section and in a position whereby it will be' engaged by the cover plate or shutter 21. By grasping the knob of the shutter plate and tending to move it in a direction causing it to abut against the lug, a firm purchase maybe had on the inner section by which it may be revolved to thread the sections to gether. lVhile revolving the inner section, the outer section is held stationary.

From the foregoing it is obvious that the device maybe easily applied to doors in a very inexpensive manner without the necessity of the use of screws or other fastening elements to secure the device in place. By providing the device with an opening which converges from the exterior to the interior surfaces of the door, a person interiorly of the door may obtain an extended range of vision of the surroundings immediately exteriorly. of the door without being observed.-

' While I have shown thepreferred form .of my invention, it is to be understood that VVBJIIODS changes in its construction. may be made by those skilled in theart without departing from the'spiritsof the invention.

Having thus described my invention what I claim and desire to secure by Letters Patent is: 1 I p 1. An observation fitting for doors comprising 'a pair of substantially cylindrical mernbersjadapted to be inserted into oppo site ends of an opening formed transversely through a door; the adjacent ends'of said members being adapted to be telescopically connected to adapt the fitting to. the thick- I ness ofthe door, a' face plate on one member,

'7 an inwardly projecting frusto-conical tube "on the other Vmember converging toward the face plate and having its inner end open,

sai'd'lace plate having anopening formedtherethrough'in alignment with the conical tube. H r 1 2. An observation fitting for doors comprising a-pair' of substantially cylindrical members adapted to beinserted into opposite a ends or an opening formed transversely through a door the ad aQent' ends of said members being adapted to threadedly con- ,nea whereby they will telescope to connect the membersandadapt'the fitting to thethickness of the'door a faceplate onone member, an inwardly projecting frustoconicaltube out-he other member converging to- 35 ward the face plate anidhaving its inner end open, said face plate having' an opening formed therethrough in alignment with the conical tube, and a shutter pivoted to the toward the face plate andhavingits inner' end open, said faceplate having an opening formed therethrough, in alignment withtlie.

conical tube, and al fshutter pivoted to the i'ace plate and adapted. to cover saidflopen ing, a; lug struck from the face plate and en- ,gageablejbysaid' shutter to facilitate the connectingof said vcylindrical members. i

4:. Anobservation fitting for doors com prising apair-of substantially cylindrical members 'adapted to beinserte'd into oppo-' site ends of an opening formed transversely through a doorya face platelonone member,

an inwardly projecting frusto-conical tube on the other'member converging toward the faceplate and havlng'lts lnner end open and contiguous to the, face plate, sald' face plate having an openingformed therethrough in alignment with the conical tubei f I-IOUGlFlTON SAX WEB. 

